laezelere



(No Model.) 2 SheetsSheet 1,

H. B. LARZELERE.

PORTABLE ENGINE.

PafientedJune 10, 1884.

(No Model.) 7 2 SheetsSheet 2.

H. B. LA'RZELERE.

} PORTABLE ENGINE- No. 300,270. Patented June 10, 1884.

Ffd. a.

' the boiler.

-fication of part of the invention.

UNITED STATES HENRY B. LARZELERE, OF GREENOASTLE, PENNSYLVANIA, ASSIGNOR TO THE CROW- ELL MANUFACTURING COMPANY, 0F SAME PLACE.

PORTABLE ENGINE.

SPECIFICATION forming part of Letters Patent No. 300,270, dated June 10, 1884.

Application filed December-21, 1883. (No model.)

To (tZZ whom it may concern/.-

Be it known that I, HENRY B. LARZELERE, a citizen of the United States, and a resident of Greencastle, Franklin county, Pennsylvania, have invented certain Improvements in Portable Engines, of which the following is a specification.

The object of my invention is to so secure the engine frame and cylinder to the boiler that the expansion and contraction of the latter will not affect the proper relation to each other of the bearings, guides, and cylinder.

In the accompanying drawings, Figure 1, Sheet 1, is a plan View of a portable engine with my improvements; Fig. 2, Sheet 2, an end view, partly in section; Fig. 8, a side view, partly in section and on a largerscale; Fig. 4., the same with some of the parts in a different posit-ion, and Fig. 5 a view illustrating a modi- A is the boiler; B, the cylinder of the engine, and I) the engine-frame, the rear end of which is connected to or cast with the cylinder-head a, the front end of the frame having the saddle F and bearings 12 for the crankshaft G, said saddle F being rigidly bolted to In cases where the rear end of the frame is also rigidly secured to the boiler, the expansion and contraction of the latter causes such a buckling or distortion of the frame that the proper alignment of cylinder, guides, and shaft-boxes is disturbed, thus resulting in uneven wear and in heating of the boxes and guides. To overcome this objection, I connect the cylinder of the engine (or it may be the end of the frame to which the cylinder is attached) to the boiler by a joint which, while it prevents any vertical or lateral movement of said cylinder, will not interfere with a slight longitudinal movement of the. same independently of the boiler. To the boiler is bolted a bracket, (1, and through an opening, 6, in the latter passes a bolt, f, the upper end of which has an eye for the reception of a pin, 5/, carried by lugs h on the under side of the cylinder. Between the lugs h and bracket (1 are interposed rollers or, arranged one on each side of the confining-bolt f, the lower end of the bolt being provided with a nut, n, bearing on the under side of the bracket. ening this nut '22- the lugs 71 of the cylinder may be caused to bear firmly upon the rollers m, and the latter upon the bracket (1, so as to prevent any vertical or lateral jumping of the cylinder when the engine is running, the rollers in, however, permitting the ready movement of the bracket din respect to the cylinder due to the longitudinal expansion of the boiler, (see Fig. 4,) thus removing the strain from the engine-frame.

Instead of using two rollers m, one on each side of the bolt f, a single central bolt and roller may be used, especially in engines of the smaller class, the bolt in this case passing through an elongated opening in the roller, as shown in Fig. 5.

I claim as my invention-- The combination of the boiler A, having a bracket, cl, the engine-frame D, secured to the boiler at the front end, and having at the rear end of the cylinder B a confining-bolt, f, and one or more rollers, m, interposed between the bracket (Z and the engine cylinder or frame, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY B. LARZELERE.

\Vitnesses:

A. \V. W'nLsH, WM. E. GANTNER.

By tight- 

